The automobile dictionary meaning of this car engine P3137 Code is found online and meaning of the code is important thing for solving the car engine. The automobile dictionary meaning of the code is found online for free and it is p for Powertrain Code Problem is related engine, transmission and emissions systems. 3 for SAE – Generic. 1 for Transmission. 3 for Cruise Control Servo Indicates Low and 7 for Cruise Inhibit Control Circuit. However, if you want to solve the car engine, you should not try to do this if you are not an expert in this case. You should take help from an expert technician.